US4640713AExpiredUtility
Tarnish remover/metal polish formulation comprising a metal iodide, an acid, and water
Est. expiryNov 19, 2004(expired)· nominal 20-yr term from priority
Inventors:Robert B. Harris
C23F 3/06C23G 1/10
44
PatentIndex Score
7
Cited by
19
References
17
Claims
Abstract
A tarnish remover/metal polish formulation comprising water, an acid, and metal iodide, such as potassium iodide, is described. The components of the formulation chemically react with the tarnish or stain on a metal surface, removing the tarnish or stain while leaving the metal unaffected. The tarnish remover/metal polish can be applied as a dip-rinse or as a polish. The composition is easily applied and easily removed.
Claims
exact text as granted — not AI-modifiedIt is claimed:
1. An improved tarnish remover/metal polish formulation comprising: (a) at least one metal iodide in an amount of from about 8 to 25% by weight; (b) an acid in an amount of from about 0.1 to 25% by weight; (c) a surfactant in an amount of from about 0.5 to 3% by weight, and; (d) the balance water.
2. The improved tarnish remover/metal polish formulation of claim 1 wherein the metal iodide is a member of the group consisting of potassium iodide, sodium iodide, lithium iodide, magnesium iodide, calcium iodide, rubidium iodide, cesium iodide, and mixtures thereof.
3. The improved tarnish remover/metal polish formulation of claim 2 wherein the metal iodide is potassium iodide.
4. The improved silver polish formulation of claim 1 wherein said acid is phosphoric acid which is present at from about 3 to 8% by weight.
5. The improved silver polish formulation of claim 1 wherein said acid is citric acid which is present at from about 3 to 8% by weight.
6. The improved silver polish formulation of claim 1 wherein said acid is sulfuric acid which is present at from about 3 to 8% by weight.
7. The improved silver polish formulation of claim 1 wherein said acid is sulfonic acid which is present at from about 3 to 8% by weight.
8. The improved tarnish remover/metal polish formulation of claim 1 wherein said potassium iodide is present at from about 8 to 15% by weight.
9. The metal polish of claim 1 including in addition to said essential ingredients a thickening agent.
10. The metal polish of claim 1 including in addition to said essential ingredients an organic solvent.
11. An improved tarnish remover/metal polish formulation suitable as dip rinse comprising: (a) from about 3 to 6% by weight of an acid, (b) from about 8 to 15% by weight of a metal iodide, (c) a surfactant in an amount of about 0.5 to 3% by weight; and (d) the balance water.
12. The improved tarnish remover/metal polish formulation of claim 11 wherein the metal iodide is a member of the group consisting of potassium iodide, sodium iodide, lithium iodide, magnesium iodide, calcium iodide, rubidium iodide, cesium iodide, and mixtures thereof.
13. The improved tarnish remover/metal polish formulation of claim 12 wherein the metal iodide is potassium iodide.
14. An improved tarnish remover/metal polish formulation suitable for use as a metal polish comprising from about 3 to 6% by weight of an acid, 8 to 15% by weight of a metal iodide, 4 to 15% of an abrasive, 0.5 to 3% of a surfactant, and the balance water.
15. The improved tarnish remover/metal polish formulation of claim 14 wherein the metal iodide is a member of the group consisting of potassium iodide, sodium iodide, lithium iodide, magnesium iodide, calcium iodide, rubidium iodide, cesium iodide, and mixtures thereof.
16. The improved tarnish remover/metal polish formulation of claim 15 wherein the metal iodide is potassium iodide.
17. The metal polish of claim 1 including in addition to said essential ingredients an abrasive.Join the waitlist — get patent alerts
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